define heat
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What is HEAT? What is HEAT? Energy in the process of transfer between a system and its surroundings as a result of temperature differences. However, the term is still used also to refer to the energy contained in a sample of matter. Also for temperature, eg forging or welding heat.
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Specific Heat Specific Heat. The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius. The relationship between heat and temperature change is usually expressed in the form shown below where c is the specific heat.
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Heat transfer Heat conduction, also called diffusion, is the direct microscopic exchange of kinetic energy of particles through the boundary between two systems. When an object is at a different temperature from another body or its surroundings, heat flows so that the body and the surroundings reach the same temperature, at which point they are in thermal equilibrium.
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What is Heat? To review, temperature is a measure of the ability of a substance, or more generally of any physical system, to transfer heat energy to another physical system. If two objects-or if a system and its surroundings-have a different temperature, then they have a different ability to transfer heat.
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temperature 1. (General Physics) the degree of hotness of a body, substance, or medium; a physical property related to the average kinetic energy of the atoms or molecules of a substance. 2. (General Physics) a measure of this degree of hotness, indicated on a scale that has one or more fixed reference points.
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Heat This article is about a mode of transfer of energy. For other uses, see Heat (disambiguation). In physics, heat is the amount of energy flowing from one body to another spontaneously due to their temperature difference, or by any means other than through work or the transfer of matter.
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Energy, heat, and temperature Heat is the quantity of thermal energy that enters or leaves a body. Temperature measures the average translational kinetic energy of the molecules in a body. This animation depicts thermal translational motions of molecules in a gas.
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Heat Transfer Heat Transfer. Heat transfer, also referred to simply as heat, is the movement of thermal energy from one thing to another thing of different temperature. These objects could be two solids, a solid and a liquid or gas, or even within a liquid or gas.
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engineer a person trained and skilled in the design, construction, and use of engines or machines, or in any of various branches of engineering: a mechanical engineer; a civil engineer. 2. a person who operates or is in charge of an engine.
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What is heat? Simple science â Chemistry Temperature is a way of measuring how fast the molecules are moving. Bill Nye explains about heat. If two things are touching each other, heat will flow from the hotter one to the colder one, unless they are the same temperature. The molecules of the hotter one will slow down, and the molecules of the colder one will speed up, until they are all moving at the same speed, and the two things have the same temperature.
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heat heat absorption definition, heat absorption meaning | English dictionary. heat. Informal to increase the intensity of activity, coercion, etc. n the heat required to raise the temperature of a substance by unit temperature interval under specified conditions.
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What Does Heat Do? Heat is the flow of energy from a high temperature location to a low temperature location. This flow of energy is always associated with changes in the system and the surroundings. There can be changes in the temperature, changes in the state of matter and changes that result from the doing of work.hat can be said of the object can also be said of the surroundings. The release or absorption of energy in the form heat by the surroundings is often associated with a temperature change of the surroundings.
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Heat Capacity Definition Share. By Anne Marie Helmenstine, Ph.D. Definition: Heat capacity is the amount of heat energy required to raise the temperature of a body a specified amount. In SI units, heat capacity (symbol: C) is the amount of heat in joules required to raise the temperature 1 Kelvin.
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temperature 3. An abnormally high body temperature; a fever. Usage The molecules of all substances are in motion, and the energy associated with this motion is called kinetic energy. Temperature and heat are both ways of measuring this energy, but they do not mean the same thing. A substance's temperature is the average kinetic energy of the substance's molecules.
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- Because heat refers to a quantity of energy transferred between two bodies, it is not a state function of either of the bodies, in contrast to temperature and internal energy.
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Examples of Heat Energy Heat energy is the term that we use to describe the level of activity for the molecules in an object. An object with molecules that are very excited and zip around rapidly is known as being hot, while an object with molecules whose atoms move around less rapidly is known as cold.
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- Summary: Heat is the energy an object has because of the movement of its atoms and molecules which are continuously jiggling and moving around, hitting each other and other objects. When we add energy to an object, its atoms and molecules move faster increasing its energy of motion or heat.
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Heat Sensible heat, in contrast to latent heat, is the heat transferred to a thermodynamic system that has as its sole effect a change of temperature. Both latent heat and sensible heat transfers increase the internal energy of the system to which they are transferred.
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heat capacity heat capacity. The ratio of the heat energy absorbed by a substance to its increase in temperature. Heat capacity is also called thermal capacity. ◇ The specific heat or specific heat capacity of a substance is the heat capacity per unit mass, usually measured in joules per kilogram per degree Kelvin.
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- The term “heat” as used in everyday language refers both to thermal energy (the motion of atoms or molecules within a substance) and energy transfers by convection, conduction, and radiation (particularly infrared and light).
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hot Definition of hot. hotter. hottest. 1a : having a relatively high temperature hot and humid weather serving hot meals to the poorb : capable of giving a sensation of heat or of burning, searing, or scalding working outside in the hot sun fried in hot oilc : having heat in a degree exceeding normal body heat Your forehead feels hot.
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temperature temperature in Science. A measure of the ability of a substance, or more generally of any physical system, to transfer heat energy to another physical system. The temperature of a substance is closely related to the average kinetic energy of its molecules. See also Boyle's law.
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- Heat is defined as the total kinetic energy of all the atoms and molecules that make up a substance.    Temperature is a measure of the average kinetic energy of the in … dividual atoms or molecules in a substance.imilarities and differences between heat and temperature are: 1. Heat can change the state of particles; for example, if the substance is ice and you add heat, it would mel … t the ice to water. Temperature does not do this. 2.
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What is Heat? It is neither a substance nor a fluid that is conserved. Heat is a form of energy that can be transferred from one object to another or even created at the expense of the loss of other forms of energy. To review, temperature is a measure of the ability of a substance, or more generally of any physical system, to transfer heat energy to another physical system. If two objects-or if a system and its surroundings-have a different temperature, then they have a different ability to transfer heat.
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Definition of specific heat Definition of specific heat. 1) The amount of heat required to raise the temperature of one gram of substance one degree Celsius.
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heat Noun. 1. heat energy-a form of energy that is transferred by a difference in temperature. heat. energy, free energy - (physics) a thermodynamic quantity equivalent to the capacity of a physical system to do work; the units of energy are joules or ergs; energy can take a wide variety of forms. geothermal energy-energy derived from the heat in the interior of the earth. heat of dissociation-the heat required for a fluid substance to break up into simpler constituents. heat of formation-the heat evolved or absorbed during the formation of one mole of a substance from its component elements.